On long remote hikes or deep winter endeavors injuries that would otherwise make for a bad day, can be deadly. Cell phone service here in the north east can unreliable, or non-existent on my T-Mobile phone. It’s important to be able to signal for help when you’re in trouble in the back country. This is where PLB’s and Satellite Communicators come in. Before I continue, I’d like to state that I’m going to cover these devices from a layman’s perspective without delving too far into how they work, what frequencies they work on, etc…